Crossing over (genetic recombination) occurs during _______ of meiosis I.
- A
Telophase I (when nuclear envelopes begin to reform)
- B
Anaphase I (when homologous chromosomes separate)
- Ccheck_circle
Prophase I (when homologs synapse and exchange segments)
- D
Cytokinesis (when the cytoplasm divides into two)
Explanation
Tetrads form during prophase I; chromatids exchange segments at chiasmata, mixing maternal and paternal alleles.